package string;

import java.util.Locale;

/**
 * String toUpperCase()
 * String toLowerCase()
 */
public class ToUpperCaseDemo {
    public static void main(String[] args) {
        String a="我看擦jkcn";
        String upper=a.toUpperCase(Locale.ROOT);
        System.out.println(upper);
        String b="ASDJIAOFJE";
        String lower=b.toLowerCase(Locale.ROOT);
        System.out.println(lower);
    }
}
